<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>browser-sys-menu</title>
    <style>
        button {
            height: 50px;
            width: 100px;
            margin: 10px;
        }
    </style>
    <script type="application/javascript">
    </script>
</head>
<body style="overflow: hidden;margin: 0px;padding: 0px;width: 100%;text-align: center;background-color: darkgray">
<a href="https://www.baidu.com">点击跳转百度</a>
<button>Html 按钮</button>
</body>
</html>